Init support for acer chromebook cp713-1wn(with full audio support fr…

acer/chromebook/cp713-1wn/alsa-ucm-conf-cros.nix

@@ -0,0 +1,25 @@
+{ lib
+, alsa-ucm-conf
+, fetchFromGitHub
+}:
+
+alsa-ucm-conf.overrideAttrs (oldAttrs: {
+  wttsrc = fetchFromGitHub {
+    owner = "WeirdTreeThing";
+    repo = "alsa-ucm-conf-cros";
+    rev = "1908a457c7f2bf8b63264fe3b1e0522ea632ac5a";
+    hash = "sha256-h4qphJgXlEGMjpV4+llTaJeM3hoglmmgkXY8rOp+MAI=";
+  };
+
+  postInstall = ''
+    cp -rf $wttsrc/ucm2 $out/share/alsa/
+  '';
+
+  meta = oldAttrs.meta // {
+    platforms = [
+      "aarch64-linux"
+      "x86_64-linux"
+    ];
+  };
+})
+

acer/chromebook/cp713-1wn/default.nix

@@ -0,0 +1,97 @@
+{ lib, pkgs, ... }:
+
+let
+  alsa-ucm-conf-cros = pkgs.callPackage ./alsa-ucm-conf-cros.nix { };
+in {
+  imports = [
+  ../../../common/cpu/intel/kaby-lake
+  ../../../common/pc/laptop
+  ../../../common/hidpi.nix 
+  ];
+
+  boot.extraModprobeConfig = ''
+    options snd-intel-dspcfg dsp_driver=4
+    options snd-soc-avs ignore_fw_version=1
+    options snd-soc-avs obsolete_card_names=1
+  '';
+
+  boot.initrd.systemd.tpm2.enable = lib.mkDefault false;
+  boot.kernelParams = [ "iomem=relaxed" ];
+  hardware.enableRedistributableFirmware = lib.mkDefault true;
+  hardware.sensor.iio.enable = lib.mkDefault true;
+  services = {
+    libinput.enable = lib.mkDefault true;
+    keyd.enable = lib.mkDefault true;
+  };
+
+  services.keyd = {
+  keyboards = {
+    # The name is just the name of the configuration file, it does not really matter
+    default = {
+      ids = [ "*" ]; # what goes into the [id] section, here we select all keyboards
+      # Everything but the ID section:
+      settings = {
+        # The main layer, if you choose to declare it in Nix
+        main = {
+	  f1 = "A-left";
+	  f2 = "A-right";
+          f3 = "refresh";
+          f4 = "A-f10";
+          f5 = "A-tab";
+          f6 = "brightnessdown";
+          f7 = "brightnessup";
+          f8 = "mute";
+          f9 = "volumedown";
+          f10 = "volumeup";
+          f13 = "coffee";
+        };
+        control = {
+        f5 = "sysrq";
+        };
+	alt = {
+	leftmeta = "capslock";
+	left = "home";
+	right = "end";
+	up = "pageup";
+	down = "pagedown";	
+	backspace = "delete";
+	};
+      };
+      extraConfig = ''
+        # put here any extra-config, e.g. you can copy/paste here directly a configuration, just remove the ids part
+      '';
+    };
+  };
+};
+
+  # Optional, but makes sure that when you type the make palm rejection work with keyd
+  # https://github.com/rvaiya/keyd/issues/723
+  environment.etc."libinput/local-overrides.quirks".text = ''
+    [Serial Keyboards]
+    MatchUdevType=keyboard
+    MatchName=keyd virtual keyboard
+    AttrKeyboardIntegration=internal
+  '';
+
+  security.tpm2.enable = lib.mkDefault false;
+
+  environment.sessionVariables.ALSA_CONFIG_UCM2 = lib.mkDefault "${alsa-ucm-conf-cros}/share/alsa/ucm2";
+
+  services.pipewire.wireplumber.extraConfig."51-increase-headroom" = {
+  "monitor.alsa.rules" = [
+    {
+      matches = [
+        {
+          "node.name" = "~alsa_output.*";
+        }
+      ];
+      actions = {
+        "update-props" = {
+          "api.alsa.headroom" = 4096;
+        };
+      };
+    }
+  ];
+};
+}
+

flake.nix

@@ -46,6 +46,7 @@
         in
         {
           acer-aspire-4810t = import ./acer/aspire/4810t;
+	  acer-chromebook-cp713-1wn = import ./acer/chromebook/cp713-1wn;
           airis-n990 = import ./airis/n990;
           aoostar-r1-n100 = import ./aoostar/r1/n100;
           apple-imac-14-2 = import ./apple/imac/14-2;